Enerdrive B-TEC 125Ah Lithium Battery, 40A DC2DC, 20A AC & ePro+ Monitor Bundle



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Product Description

Enerdrive B-TEC 125Ah Lithium Battery, Charger & Monitor Bundle, 5 Year Warranty. The Enerdrive 125Ah lithium battery, when used in combination with a 40A DC-to-DC charger, is typically part of a setup commonly used in various applications, including off-grid power systems, recreational vehicles (RVs), boats, and other mobile power needs.

The battery monitor gives you real-time information on the battery's status, helping you manage your power consumption and prevent over-discharging the battery, which could damage it.

The AC charger becomes relevant when you are connected to an AC power source, such as a campsite with electricity hookups or a marina with shore power. It provides a convenient means to recharge the battery when AC power is available.

Bundle Includes: 

  • EPL-125BT-12V - Enerdrive B-TEC 125Ah Lithium Battery
  • EN3DC40+ - Enerdrive 40A DC to DC Battery Charger
  • EN55050 - Enerdrive ePRO PLUS Battery Monitor

Optional AC Charger:

  • EN31220 - Enerdrive 20A AC Battery Charger
  • EN31240 - Enerdrive 40A AC Battery Charger

To effectively manage your power system with an Enerdrive B-TEC 125Ah battery, a 40A DC2DC charger, a 20/40A AC charger and an ePro Plus Battery Monitor, it's important to know how these components interact in your energy setup.

  • B-TEC 125Ah Lithium Battery: This serves as the cornerstone of your energy storage system, with a 125 ampere-hour capacity. It is the source of electrical energy for powering your appliances and devices, regardless of whether your application is an RV, boat, or another off-grid setup.
  • 40A DC2DC Charger: The DC-to-DC charger plays a pivotal role in your setup. It diligently regulates and transforms incoming DC power from various sources, such as your vehicle's alternator or solar panels, ensuring it's efficiently channeled to recharge the battery. With a capability of delivering a maximum charging current of 40 amps when sourcing power from DC sources, it guarantees the optimal charging performance.
  • 20/40A AC Charger: The AC charger is used for recharging the battery when you have access to an AC power source, such as when your vehicle or setup is connected to shore power or an external generator. This charger converts AC power into DC power and delivers up to 20/40 amps to recharge the battery.
  • ePRO Plus Battery Monitor: The ePRO Plus Battery Monitor is a critical component that keeps you informed about the state of your battery. It provides real-time data on your battery's voltage, current, state of charge, and more. This monitoring system enables you to keep a close eye on your battery's health, ensuring you have a clear understanding of its performance and capacity. With this information, you can make informed decisions about your energy usage and recharging strategy.
Bundles K-125-01 K-125-02
EPL-125BT-12V * *
EN3DC40+ * *
EN55050 * *
EN31220 *  
EN31240   *

Battery Information:

Enerdrive Product Manual

DC Charger Information:

Enerdrive Product Manual

AC Charger Information:

Enerdrive Product Manual

Monitor Information:


SKU K-125-2

Brand Enerdrive

GTIN 9342616020661

Warranty Period: 5 Years

Product Category Batteries

Battery Voltage 12V

Amp Hours (ah) 125

Battery Length (mm) 318

Battery Width (mm) 165

Battery Height (mm) 232

Battery Weight (kg) 15.5

DC Charger Output Current Rating (Amps) 40

Nominal Voltage 12.8V

Nominal Capacity 125Ah

Cycle Life (DOD – 80% under controlled conditions) ≥ 2000 Cycles

Battery Charge Temperature 0~45°C

Normal Charge Voltage CV/CC* 14.20 ̴ 14.60V

Standby (Float) Voltage 13.50 ̴ 13.80V

Maximum Charge Current 60A @ 25°C for 30mins

Recommended Charge Current for Maximum Life 20~60A

Battery Discharge Temperature -20 ̴ 60°C

Battery Output Voltage Range 11.00 ̴ 14.60V

Maximum Discharge Current 100A @ 25°C ± 5°C for 30mins

Pulse Discharge Current 450A for 1.0s

Discharge Cut-off Voltage ≤ 11.20V

Over-Charge Protection Per Cell 3.90V ± 0.03V

Over-Charge Release Per Cell 3.60V ± 0.05V

Over-Charge Release Method Discharge below release voltage

Over-discharge Protection Per Cell 2.80V ± 0.05V

Over-discharge Release Per Cell 3.20V ± 0.05V

Over-discharge Release Method Apply Charge/Voltage ≥12.8V

Battery Manual Reset Button Yes

Discharge Over Current 110A for 30s – 450A for 1s

Protection Reset Time Approx 10s Auto Release

Over Current Release Method Disconnect Load

Battery Charge Over Temperature Protection to 55°C ± 5°C, Release at 45°C ± 5°C

Battery Discharge Over Temperature Protection to 65°C ± 5°C, Release at 50°C ± 5°C

Short Circuit Protection Auto release after 5s

Case Construction Hi Impact ABS Plastic

Temperature & Humidity Range ≤ 30 days -20°C ̴ 60°C, 5 ̴ 75% RH, ≥ 90 days -10°C ̴ 45°C, 5 ̴ 75% RH

Dimensions 242 x 172 x 74mm (DC Charger)


Enerdrive B-TEC Lithium Batteries - Part 1 - Application


Enerdrive B-TEC Lithium Batteries - Part 2 - Specifications


Enerdrive B-TEC Lithium Batteries - Part 3 - Installation


Enerdrive B-TEC Lithium Batteries - Part 4 - Settings


Enerdrive B-TEC Lithium Batteries - Part 5 - Operation


Enerdrive B-TEC Lithium Batteries - Part 6 - Fault Finding


The Best Caravan Battery?


What Will My Camping Battery Run?


Expanding Your Enerdrive B-TEC Capacity: Enerdrive Batteries in Parallel


Introducing The Enerdrive Battery Charger Range


How To: Resetting A Flat Enerdrive BTEC or eLITE Battery


Must Know Features of the Enerdrive ePRO Plus Battery Monitor


EN3DC40+ Enerdrive Battery Charger Run Through


Product Q&A

Ask Us a Question
  • Warranty . Thanks Rob Beer

    Hi Rob,

    The manufacturers warranty period for the Enerdrive 125aH lithium batteries is 2 years.

    As of 2020, all Enerdrive products now comes with a 5 Year Warranty. Any products purchased since 1st of January 2020, Enerdrive retrospectively applying the new 5 year warranty period.


For details relating to this product's warranty CLICK HERE


    For details relating to our delivery process CLICK HERE

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